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參數(shù)資料
| 型號(hào)： | AK4645EZ |
| 廠(chǎng)商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類(lèi)： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP-AMP |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/惠普腺苷 |
| 文件頁(yè)數(shù)： | 47/96頁(yè) |
| 文件大?。?/td> | 933K |
| 代理商： | AK4645EZ |
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[AK4645EZ]
MS0605-E-00
2007/06
- 47 -
■
Input Digital Volume (Manual Mode)
The input digital volume becomes a manual mode when ALC bit is “0”. This mode is used in the case shown below.
1.
After exiting reset state, set-up the registers for the ALC operation (ZTM1-0, LMTH1-0 and etc)
2.
When the registers for the ALC operation (Limiter period, Recovery period and etc) are changed.
For example; when the change of the sampling frequency.
3.
When IVOL is used as a manual volume.
IVL7-0 and IVR7-0 bits set the gain of the volume control (Table 36). The IVOL value is changed at zero crossing or
timeout. Zero crossing timeout period is set by ZTM1-0 bits. If IVL7-0 or IVR7-0 bits are written during
PMADL=PMADR bits = “0”, IVOL operation starts with the written values at the end of the ADC initialization cycle
after PMADL or PMADR bit is changed to “1”.
Even if the path is switched from recording to playback, the register setting of IVOL remains. Therefore, IVL7-0 and
IVR7-0 bits should be set to “91H” (0dB).
IVL7-0
IVR7-0
F1H
+36.0
F0H
+35.625
EFH
+35.25
:
:
E2H
+30.375
E1H
+30.0
E0H
+29.625
:
:
03H
53.25
02H
53.625
01H
54
00H
MUTE
Table 36. Input Digital Volume Setting
Default
GAIN (dB)
Step
0.375dB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4645 | Stereo CODEC with MIC/HP-AMP |
| AK4646EZ | Stereo CODEC with MIC/SPK-AMP |
| AK4646 | Stereo CODEC with MIC/SPK-AMP |
| AK4646EN | Stereo CODEC with MIC/SPK-AMP |
| AK4647 | Stereo CODEC with MIC/HP-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4646 | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with built-in MIC/SPK amplifier |
| AK4646_11 | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
| AK4646EN | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
| AK4646ENP-L | 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:STEREO CODEC+SPK |
| AK4646EZ | 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Stereo CODEC with MIC/SPK-AMP |
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